Erlangen 2022 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 25: Ultracold Atoms and Molecules I (joint session Q/A)
A 25.3: Vortrag
Donnerstag, 17. März 2022, 11:00–11:15, Q-H10
Optical dipole trap in microgravity - the PRIMUS-project — •Marian Woltmann1, Christian Vogt1, Sven Herrmann1, and The PRIMUS-Team1,2 — 1University of Bremen, Center of Applied Space Technology and Microgravity (ZARM) — 2Institut für Quantenoptik, LU Hannover
The application of matter wave interferometry in a microgravity (µg) environment offers the potential of largely increased interferometer times and thereby highly increased sensitivities in precision measurements, e.g. of the universality of free fall. While most µg-based cold atom experiments use magnetic trapping on an atom chip, we develop an optical dipole trap as an alternative source for matter wave interferometry in weightlessness. Solely using optical potentials offers unique advantages like improved trap symmetry, trapping of all magnetic sub-levels and the accessibility of Feshbach resonances. Equipping a 50W trapping laser at a wavelength of 1064nm we implement a cold atom experiment for use in the drop tower at ZARM in Bremen, offering 4.7s of microgravity time. We demonstrated Bose-Einstein condensation of Rubidium in a compact setup on ground while now focusing on a fast, efficient preparation in microgravity using painted optical potentials. Within this talk we will report on the current status and latest results of the experiment. The PRIMUS-Project is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry of Economic Affairs and Energy (BMWi) under grant number DLR 50 WM 2042.